{"id":6289,"date":"2024-07-10T15:18:51","date_gmt":"2024-07-10T07:18:51","guid":{"rendered":"https:\/\/t.n-years.com\/?p=6289"},"modified":"2024-07-10T15:18:51","modified_gmt":"2024-07-10T07:18:51","slug":"objective-c-%e5%92%8c-swift-%e4%b8%ad%e7%9a%84-copy-%e5%92%8c-mutablecopy-%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/t.n-years.com\/?p=6289","title":{"rendered":"Objective-C \u548c Swift \u4e2d\u7684 copy \u548c mutableCopy \u533a\u522b"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u975e\u539f\u521b\u3001Gemini \u95ee\u7b54\u751f\u6210<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b80\u4ecb<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u90fd\u662f Objective-C \u548c Swift \u4e2d\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\u526f\u672c\u7684\u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u5b83\u4eec\u5728\u521b\u5efa\u7684\u526f\u672c\u7c7b\u578b\u548c\u751f\u6210\u7684\u5bf9\u8c61\u7684\u53ef\u53d8\u6027\u65b9\u9762\u6709\u6240\u4e0d\u540c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Objective-C<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Objective-C \u4e2d\uff0c<code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u90fd\u8fd4\u56de\u4e00\u4e2a id \u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u53ef\u4ee5\u8f6c\u6362\u4e3a\u9002\u5f53\u7684\u7c7b\u7c7b\u578b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>copy<\/code>\uff1a<\/strong> \u521b\u5efa\u5bf9\u8c61\u7684\u4e0d\u53ef\u53d8\u526f\u672c\u3002\u590d\u5236\u5bf9\u8c61\u7684\u5167\u5bb9\u4e0e\u539f\u59cb\u5bf9\u8c61\u76f8\u540c\uff0c\u4f46\u590d\u5236\u5bf9\u8c61\u7684\u5185\u5b58\u5730\u5740\u4e0d\u540c\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u5bf9\u8c61\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002<\/li>\n\n\n\n<li><strong><code>mutableCopy<\/code>\uff1a<\/strong> \u521b\u5efa\u5bf9\u8c61\u7684\u53ef\u53d8\u526f\u672c\u3002\u590d\u5236\u5bf9\u8c61\u7684\u5167\u5bb9\u4e0e\u539f\u59cb\u5bf9\u8c61\u76f8\u540c\uff0c\u5e76\u4e14\u5177\u6709\u76f8\u540c\u7684\u5185\u5b58\u5730\u5740\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e5f\u4f1a\u5f71\u54cd\u539f\u59cb\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u5982\u4f55\u5728 Objective-C \u4e2d\u4f7f\u7528 <code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Objective-C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>NSString *originalString = @\"Hello, world!\";\n\nNSString *immutableCopy = &#91;originalString copy];\nNSLog(@\"Immutable copy: %@\", immutableCopy); \/\/ \u8f93\u51fa\uff1aImmutable copy: Hello, world!\n\nNSMutableString *mutableCopy = &#91;originalString mutableCopy];\n&#91;mutableCopy appendString:@\"!\"];\nNSLog(@\"Original string: %@\", originalString); \/\/ \u8f93\u51fa\uff1aOriginal string: Hello, world!\nNSLog(@\"Mutable copy: %@\", mutableCopy); \/\/ \u8f93\u51fa\uff1aMutable copy: Hello, world!\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Swift<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Swift \u4e2d\uff0c<code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u8fd4\u56de\u5bf9\u8c61\u7684\u76f8\u5e94\u503c\u7c7b\u578b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>copy<\/code>\uff1a<\/strong> \u521b\u5efa\u5bf9\u8c61\u7684\u4e0d\u53ef\u53d8\u526f\u672c\u3002\u590d\u5236\u5bf9\u8c61\u7684\u5167\u5bb9\u4e0e\u539f\u59cb\u5bf9\u8c61\u76f8\u540c\uff0c\u4f46\u590d\u5236\u5bf9\u8c61\u7684\u5185\u5b58\u5730\u5740\u4e0d\u540c\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u5bf9\u8c61\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002<\/li>\n\n\n\n<li><strong><code>mutableCopy<\/code>\uff1a<\/strong> \u521b\u5efa\u5bf9\u8c61\u7684\u53ef\u53d8\u526f\u672c\u3002\u590d\u5236\u5bf9\u8c61\u7684\u5167\u5bb9\u4e0e\u539f\u59cb\u5bf9\u8c61\u76f8\u540c\uff0c\u5e76\u4e14\u5177\u6709\u76f8\u540c\u7684\u5185\u5b58\u5730\u5740\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e5f\u4f1a\u5f71\u54cd\u539f\u59cb\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u5982\u4f55\u5728 Swift \u4e2d\u4f7f\u7528 <code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Swift<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>let originalString = \"Hello, world!\"\n\nlet immutableCopy = originalString.copy()\nprint(immutableCopy) \/\/ \u8f93\u51fa\uff1aHello, world!\n\nvar mutableCopy = originalString.mutableCopy() as! NSMutableString\nmutableCopy.append(\"!\")\nprint(originalString) \/\/ \u8f93\u51fa\uff1aHello, world!\nprint(mutableCopy) \/\/ \u8f93\u51fa\uff1aHello, world!\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u751f\u6210\u7684\u5bf9\u8c61\u7684\u53ef\u53d8\u6027\u3002<code class=\"\">copy<\/code> \u521b\u5efa\u4e0d\u53ef\u53d8\u526f\u672c\uff0c\u800c <code class=\"\">mutableCopy<\/code> \u521b\u5efa\u53ef\u53d8\u526f\u672c\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u53ef\u53d8\u526f\u672c\u7684\u66f4\u6539\u4e5f\u4f1a\u5f71\u54cd\u539f\u59cb\u5bf9\u8c61\uff0c\u800c\u5bf9\u4e0d\u53ef\u53d8\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0c<code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u4e5f\u53ef\u7528\u4e8e\u521b\u5efa\u5b58\u50a8\u5728\u96c6\u5408\uff08\u4f8b\u5982\u6570\u7ec4\u548c\u5b57\u5178\uff09\u4e2d\u7684\u5bf9\u8c61\u7684\u526f\u672c\u3002\u8fd9\u5bf9\u4e8e\u786e\u4fdd\u5728\u8fed\u4ee3\u96c6\u5408\u65f6\u4e0d\u4f1a\u4fee\u6539\u96c6\u5408\u7684\u5185\u5bb9\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e00\u5f20\u8868\uff0c\u603b\u7ed3\u4e86 <code class=\"\">copy<\/code> \u548c <code class=\"\">mutableCopy<\/code> \u4e4b\u95f4\u7684\u5173\u952e\u533a\u522b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u7279\u6027<\/th><th>copy<\/th><th>mutableCopy<\/th><\/tr><tr><td>\u5bf9\u8c61\u7c7b\u578b<\/td><td>\u4e0d\u53ef\u53d8<\/td><td>\u53ef\u53d8<\/td><\/tr><tr><td>\u5185\u5b58\u5730\u5740<\/td><td>\u4e0d\u540c<\/td><td>\u76f8\u540c<\/td><\/tr><tr><td>\u5bf9\u539f\u59cb\u5bf9\u8c61\u7684\u5f71\u54cd<\/td><td>\u65e0<\/td><td>\u662f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e0c\u671b\u8fd9\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u975e\u539f\u521b\u3001Gemini \u95ee\u7b54\u751f\u6210 \u7b80\u4ecb copy \u548c mutableCopy \u90fd\u662f Objective-C \u548c &#8230; <\/p>\n<div class=\"read-more navbutton\"><a href=\"https:\/\/t.n-years.com\/?p=6289\">\u9605\u8bfb\u66f4\u591a<i class=\"fa fa-angle-double-right\"><\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[66,67,112],"class_list":["post-6289","post","type-post","status-publish","format-standard","hentry","category-5","tag-ios","tag-swift","tag-112"],"_links":{"self":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6289"}],"version-history":[{"count":1,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6289\/revisions"}],"predecessor-version":[{"id":6290,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6289\/revisions\/6290"}],"wp:attachment":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}